service worker: Implement NavigationPreloadManager.setHeaderValue

content/common/service_worker/service_worker_messages.h

Index: content/common/service_worker/service_worker_messages.h
diff --git a/content/common/service_worker/service_worker_messages.h b/content/common/service_worker/service_worker_messages.h
index cf1887932bdada354677ebd92aaa9728c6663e89..7cd3d188eba19dac6be0f30db941ce0be29762f5 100644
--- a/content/common/service_worker/service_worker_messages.h
+++ b/content/common/service_worker/service_worker_messages.h
@@ -57,6 +57,11 @@ IPC_STRUCT_TRAITS_BEGIN(content::ExtendableMessageEventSource)
   IPC_STRUCT_TRAITS_MEMBER(service_worker_info)
 IPC_STRUCT_TRAITS_END()
 
+IPC_STRUCT_TRAITS_BEGIN(content::NavigationPreloadState)
+  IPC_STRUCT_TRAITS_MEMBER(enabled)
+  IPC_STRUCT_TRAITS_MEMBER(header)
+IPC_STRUCT_TRAITS_END()
+
 IPC_STRUCT_TRAITS_BEGIN(content::ServiceWorkerFetchRequest)
   IPC_STRUCT_TRAITS_MEMBER(mode)
   IPC_STRUCT_TRAITS_MEMBER(is_main_resource_load)
@@ -202,6 +207,14 @@ IPC_MESSAGE_CONTROL4(ServiceWorkerHostMsg_GetNavigationPreloadState,
                      int /* provider_id */,
                      int64_t /* registration_id */)
 
+// Asks the browser to set navigation preload header value for a registration.
+IPC_MESSAGE_CONTROL5(ServiceWorkerHostMsg_SetNavigationPreloadHeader,
+                     int /* thread_id */,
+                     int /* request_id */,
+                     int /* provider_id */,
+                     int64_t /* registration_id */,
+                     std::string /* header_value */)
+
 // Sends ExtendableMessageEvent to a service worker (renderer->browser).
 IPC_MESSAGE_CONTROL5(
     ServiceWorkerHostMsg_PostMessageToWorker,
@@ -501,12 +514,20 @@ IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_EnableNavigationPreloadError,
 IPC_MESSAGE_CONTROL3(ServiceWorkerMsg_DidGetNavigationPreloadState,
                      int /* thread_id */,
                      int /* request_id */,
-                     bool /* enabled */)
+                     content::NavigationPreloadState /* state */)
 IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_GetNavigationPreloadStateError,
                      int /* thread_id */,
                      int /* request_id */,
                      blink::WebServiceWorkerError::ErrorType /* code */,
                      std::string /* message */)
+IPC_MESSAGE_CONTROL2(ServiceWorkerMsg_DidSetNavigationPreloadHeader,
+                     int /* thread_id */,
+                     int /* request_id */)
+IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_SetNavigationPreloadHeaderError,
+                     int /* thread_id */,
+                     int /* request_id */,
+                     blink::WebServiceWorkerError::ErrorType /* code */,
+                     std::string /* message */)
 
 // Sends MessageEvent to a client document (browser->renderer).
 IPC_MESSAGE_CONTROL1(ServiceWorkerMsg_MessageToDocument,